Pressure regulator



July 11, 1950 L. P. SINZ PRESSURE REGULATOR Filed Jan. 22, 1946- 2Sheets-Sheet 1 gAi N \Qfl a 3 N m I Q q I m N a H v a INVENTOR. ZAWEENCEP 5/NZ muaz.

ATTORNEYS July 11, 1950 P. SINZ PRESSURE REGULATOR 2 Sheets-Sheet 2Filed Jan. 22, 194;;

Wm k INVENTOR. ZAWEf/VCE P 5//vz Patented July 11, 1950 UNITED STATESPATENT OFFICE 2,514,458 PRESSURE REGULATOR Lawrence P. Sinz, LosAngeles, Calif. Application January 22, 1946, Serial No. 642,593

1 3 Claims. This invention relates to pressure regulators and deals moreparticularly with a, pressure reducing valve suitable for use inhandling fluids or gases.

The primary object of the present invention is to provide an improvedpressure regulator which is simple in construction, leak-proof andeasily regulated for obtaining a desired differenwhich is particularlyadapted to handle carbonic gases or liquid carbon dioxide without priorheating thereof and yet obviating freezing of the parts by formation ofice due to expansion of the carbonic fluid into a low pressure area.

Another object of the invetnion is to provide a fluid pressure valvewhich embodies a variably loaded diaphragm affording the differential ofpressures from the high and low pressure sides of the regulator.

Another object of the invention is to provide a fluid pressureregulator, the design of which affords use of the regulator in anyposition, the elements of the regulator being adapted to functionproperly independently of the position of the regulator.

Another object-of the invention is to provide a fluid pressure regulatorembodying an improved valve structure and arrangement whereby efiectivesealing is obtained when the regulator is balanced by the high and lowpressure and which suitably opens, upon a drop in the low pressure, tore-establish the balance of the regulator as determined by the manualsetting thereof.

The foregoing and other objects of the invention will become clear asthe following descrip- 5 tion of the invention progresses. The -accompanying drawings, which illustrate a preferred embodiment ofthe.invention,- are used as the basis for the description which isintended as the invention which is illustrated comprises, gendesired,valve means [4 carried by the stem. and controlling the flow of highpressure fluid. from the stem, adjustable .means [5 effective to controlthe opening of the valve, means 14, and a low I pressure receiver I6 onthe outlet side of the valve means Hi.

between them as by means of peripheral bolts -,2 I.

Thestem I2 passes longitudinally through the f body l0 and, as shown,the stem and diaphragm H are rigidly connected by discs 22 and 23 oneither side of the diaphragm and soldered, threaded, brazed or welded tothestem. The

castings l1 and? are so designed as to afford abutm'ents 24 and 25respectively engageable with l. \thediscs 22 and 23 to limit themovement of the diaphragmfandthereby obviate undue distortion thereof. v

The means l3 for adjusting the loading on the ,1 diaphragm II comprisesa handle 26, a threaded hollow collar 21, threadedly engaged with thebody 9 casting ll and a coil spring 28 about the stem I2 and confinedbetween the disc 22 and a thrust diaphragm I I The stem l2 isprovidedwith a threadedouter l. end 30for connection to a high pressure source,

the/fluid from which may enter and fill the passagev 3I- extendinglongitudinally of the stem. The end of said stem which carries :thevalve 15 means M is designed to extend into the lowiprese The valvemeans [4 comprises a coil spring 32 H arranged in a counterbore 33 inthe stem to provide an abutment 34 for one end of the spring 32, afollower 35 at the other end of the spring, a check valve ball 36engaged by the follower 35 to be centered thereby in the counterbore 33,and a valve seat 31 having a passage 38. A cap 39 is threadedlyconnected with the stem H! to clamp the valve seat 31 in place and awasher 40 between said valve seat and the associated end of the stem,seals against pressure leakage through the mentioned threadedconnection. The follower 35 may be variously made. As shown, slots 4|are provided through which fluid may pass from the passage 3! throughthe passage 38 when the valve ball 38 is unseated.

The means I5. is carried by a cage 42 concentrically arranged with thestem l2 and carried by the castin is as by a threaded connection 43.

The cage is provided with parts 44 for pass-w ing fluid from 'thevalve-controlled passage 3'! into the low pressure receiver it. Themeans I5 comprises a stud 45 threaded in the end 46 of the cage 42, alock nut 41 for the stud, and a flared or conical end 48 on the stud andadapted'to' ceiver 16,, upon connection of the'stem to .a. high pressuresource, fhigh pressurefluid will'pass throughlpassage 31 to impinge onthe valve seat 31.". Sincethe valveball 36 is held against movement'fbythe end 48 'of the stud 45,'said fluid pressure wilf'cause endwise or.longitudinal movement'of the stem 12 asshown in Figure 4, and the fluidwill enter thereceiver through the Valve passagef38 and the cageports44. As the pressurebuil'dsup in the receiver, it will manifest it selfon the diaphragm l I which has a muchl'arger press'ure'eflective area"than that-of the valve seat '3l to move, and press the valve seat 3!againstthevalve ball as in Figure 1. ing of the valve means l4 willoccur at a lower. pressurein the receiverlsithan that in thestem l2, therelationshipbeing"proportional to the effective'areas' of the valveseatd'l and the dia'-'-. phragm II. The means IBjsefiectiVetQ varythemeans '14. By manually varying the loading on the non pressureside 6ithe diaphragm by means of the handle 265a desired low pressure may bedegreeofpressur'e necessary to close the'valve obtained in the receiverwhich is maintained 'by L automatic operation of the valve means I 4 asthe lowpressure falls belowa defined minimum.

The tension of thesprings 28 and 32 "is such-that desired balance isaccomplished.

As before pointed out, the regulator may be used in any position withequally efiective results. When-used horizontally, as shown, and-withcertain'con'densing gases, a drainrnay be provided for the area aboutthediaphragm. I The drain shown comprises a port 52 in said area'g aball check-53 controllingthe port, and lockihg 'plug 54 ior holding' theball check to {close 'said port and ad'apted to be bac'ked off sothatfthe area may drain throughwthe po -gra d through a passage 55 intheplug 54.1" e v n; will be evidentitnau'the described embodiment of theinvention may be varied within the general broad concepts of theinvention. I, therefore, do not desire to restrict myself to theregulator shown and described but desire to include such modificationsthereof that may fall within the spirit and scope of the invention asdefined by the appended claims.

I claim:

1. In a fluid pressure regulator, a hollow high pressure fluid receivingstem, a valve assembly at the end of said stem including a valvelmember,a seat therefor controlling flow through the stem, amember engaged withthe valve member, a diaphragm connected to the stem adapted to receivefluid under pressure passing between the valve member and its seat andto move the stem and the valve seat relatively to the valve memberuponvaryingof the pressures on the diaphragm and-.the-valve seat, manualcontrol means for applying a regulating loading on the diaphragm, andacompressible member, adapted-to bevarn ably tensioned by said control.

2. Afluid pressuremegulator comprising ahollow body, a diaphragmarranged transversely in the. hollow of the body, a stem having a high.

pressure 'fluid' passage arranged longitudinally in thebody andconnected to the diaphragm, a valve structure including a valve membercarried by the stem "for controlling flow of high pressure fluidthroughthe stem'toact on the diaphragm,

a cage carried-by the bodyandhaving ports, and a member carried by thecage and engaged by the valve member to hold the latter against movementupon endwise movement of the stem v as controlled. by flexure .of thediaphragm.

3. A fluid pressure regulatorcomprisingia hol-" low 'bodyja diaphragmarranged transversely "in the hollow of the'body; means for variablyloading thediaphragm, a stemhaving a high pressure fluid passagearranged longitudinally in the body and connected to the diaphragm, .avalve structure including a valve" member carried bythe' stem .forcontrolling flow of .high pressure fluid through the stem to act on thediaphragm, a cage carried bylthe bodyfland having ports, and a membercarried bythe cage and engaged by the valve :member "to hold the latter'against movement'upon endwise movement of thestem as controlled byflexure of the diaphragm.

LAWRENCE P. SIN'Z.

REFERENCES CITED

